CN202579768U - Double-tooth-surface braking load limit coupler - Google Patents
Double-tooth-surface braking load limit coupler Download PDFInfo
- Publication number
- CN202579768U CN202579768U CN 201220101001 CN201220101001U CN202579768U CN 202579768 U CN202579768 U CN 202579768U CN 201220101001 CN201220101001 CN 201220101001 CN 201220101001 U CN201220101001 U CN 201220101001U CN 202579768 U CN202579768 U CN 202579768U
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- coupling
- ring
- tooth
- brake
- lever
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Abstract
The utility model relates to a double-tooth-surface braking load limit coupler, which comprises an upper end cover assembly part, a spring seat, a check ring for a shaft, a bearing, a check ring for a hole, a drive coupler, a large bracket, a lever assembly, a lever stressing ring, a plane bearing, a brake ring, a friction plate bracket assembly part, and a lower end cover assembly part, and is characterized in that the upper end cover assembly part, the spring seat, the check ring for the shaft, the bearing, the check ring for the hole, the drive coupler, the large bracket, the lever assembly, the lever stressing ring, the plane bearing, the brake ring, the friction plate bracket assembly part, and the lower end cover assembly part are sequentially connected in series along the axial lead direction. The drive coupler and a driven coupler are meshed in a double-tooth-surface mode for transmission and brake release; the drive coupler and the driven coupler are separated in a helical tooth shape for the overload protection of a working machine; and in shutdown, a braking conical surface on the spring seat pushes a stressing lever assembly part to pressurize the brake ring and the friction plate bracket assembly to realize braking.
Description
Technical field
The utility model relates to a kind of bidentate face braking limit for tonnage coupling.
Background technique
Existing braking limit for tonnage coupling has the function of coupling, load limiter and break; Can reach the effect of shaft coupling transmission; When machine can be protected machine when overloading, also can brake because of stopping of machine at once, but under the little situation of load; Braking is difficult for removing, and causes the whole heating of braking limit for tonnage coupling.
Summary of the invention
The purpose of the utility model: design a kind of existing shaft coupling and braking function, the limit for tonnage function is arranged again, and under the very little situation of load, braking is easy to remove, remedy the deficiency of existing braking limit for tonnage coupling.
The utility model solves the technological scheme that its technical problem adopted:
Upper end cap assembly parts, spring seat, shaft block ring, bearing, hole are with back-up ring, initiatively coupling, big support, lever assembly, the afterburning ring of lever, plane bearing, brake hoop, friction disc support assembly parts and lower end cap assembly parts be along direction of axis line coupled in series successively.Wherein the upper end cap assembly parts comprises upper end cap, locked spacer, afterburning ring, spring adjusting nut, sliding bearing sleeve, locked spacer and afterburning pivot pin; The friction disc support assembly parts comprises friction disc support and friction plate; The lower end cap assembly parts comprises driven coupling, plane bearing two, rolling bearing and shaft block ring.
Locking nut is fixed on the upper end cap through locked spacer; Afterburning ring is close to locked spacer; As the stressed fulcrum of afterburning pivot pin, energy stored drive spring seat moves to the friction disc support direction vertically during the brake spring compression, and the conical surface on the spring seat promotes to be installed in the miniature bearing on the afterburning lever; Make the lever reinforcing press the afterburning ring of lever pressure is passed to friction disc support assembly and driven coupling brake disc through plane bearing and brake hoop, produce braking moment.
Driven coupling is the coupling that is fixed on the driven shaft; Initiatively coupling is installed on the driving shaft through spline and (refers generally to motor shaft); Friction disc support is stuck on the big support, and a certain amount of displacement is arranged vertically, can not produce angular displacement; The friction disc support two sides is glued to the friction disc support two sides through the gummed ways of connecting, is installed in vertically between brake hoop and the driven coupling brake disc.
Initiatively coupling and driven coupling be owing to adopt the helical tooth flank of two-layer different helix angles, the helix angle of internal layer helical tooth flank big (starting helicoid) wherein, the helix angle of outer helical tooth flank less (working screw face).When machine start, initiatively coupling and driven coupling starting helicoid meshes at first, because the helix angle of starting helicoid is bigger; It is bigger to nibble the axial force that produces behind the platform, and when the axial force that produces had exceeded the axial pressure of brake spring, initiatively coupling moved axially to the rear of the flank of tooth; Drive spring seat and move after together, eliminated and add the pressure that is pressed on the friction plate, removed braking; Active coupling and driven coupling starting this moment helicoid has been thrown off; The working screw face begins engagement, and initiatively the axial force of the working screw face of coupling and driven coupling generation and the axial force balance of brake spring reach the function that is easy to brake off and shaft coupling.During overload; Broken balance with brake spring pressure; In order to reach the balance with brake spring pressure; Initiatively coupling has only vertically to the further compression brake spring in active coupling rear, throws off fully up to active coupling and driven coupling profile of tooth, has played the effect of overload protection working machine.When the active coupling runs out of steam; Energy stored discharged immediately when brake spring was compressed; When the braking conical surface through spring seat promotes the afterburning ring of lever, plane bearing, brake hoop and friction plate assembly and produces friction; Friction plate assembly and driven coupling brake disc produce friction, have realized braking.
The beneficial effect of the utility model is, the function that not only possesses coupling has the function of break and load limiter again simultaneously; Accomplish to shut down braking and overload protection working machine immediately; And under the very little situation of load, be easy to brake off, improved machinery driving efficiency.
Below in conjunction with Figure of description the utility model is specified.
Description of drawings
Accompanying drawing 1: bidentate face braking limit for tonnage coupling profile schematic representation.
Accompanying drawing 2: bidentate braking limit for tonnage coupling internal structure schematic representation.
Accompanying drawing 3: driven coupling shape assumption diagram.
Accompanying drawing 4: active coupling shape assumption diagram.
Accompanying drawing 5: initiatively coupling and driven coupling are in working state engagement situation schematic representation.
Accompanying drawing 6: initiatively coupling and driven coupling are in starting state engagement situation schematic representation.
Accompanying drawing 7: initiatively coupling and driven coupling exchange to working screw face schematic representation from the starting helicoid.
Accompanying drawing 8: initiatively coupling and driven coupling are in static braking state profile of tooth mesh schematic representation.
In the accompanying drawing: 1-lower end cap, 2-bolt, 3-spring washer, the big support of 4-, 5-lever pivot pin, the afterburning lever of 6-, 7-miniature bearing; 8-bearing pivot pin, 9-bolt, 10-spring washer, the afterburning ring of 11-, 12-spring adjusting nut, 13-upper end cap; 14-is coupling initiatively, 15-shaft block ring, 16-bearing, 17-sliding bearing sleeve, 18-spring seat, 19-locked spacer; The afterburning pivot pin of 20-, 21-circlip for hole, 22-brake spring, the afterburning ring of 23-lever, 24-plane bearing one, 25-brake hoop; The 26-friction disc support, 27-friction plate, the driven coupling of 28-, 29-plane bearing two, 30-rolling bearing, 31-shaft block ring.
Embodiment
Shown in the Figure of description 2: upper end cap 13 is fixed on the big support 4 with spring pad B10 through bolt B 9, and lower end cap 1 is fixed on the big support 4 through bolt A2 and spring pad A3.
Shown in the Figure of description 2: sliding bearing sleeve 17 adopts the mode of interference fit to connect with upper end cap 13, and many afterburning pivot pins 20 are through on a plurality of holes of upper end cap 13, and becomes the sliding connection mode; Afterburning ring 11 is enclosed within on the upper end cap 13; And withstand on and add on the mechanical axis pin 20, spring adjusting nut 12 is regulated axial position along the outside thread on the upper end cap 13, after mixing up; In order to prevent to produce angular displacement and axial displacement, with locked spacer 19 lockings.
Shown in the Figure of description 2: spring seat 18 is positioned on the active coupling 14 with back-up ring 21 through shaft block ring A15, rolling bearing 16 and hole, and many brake springs are arranged in parallel for 22 one-tenth, an end pressing spring seat 18, and the other end withstands afterburning pivot pin 20.
Shown in the Figure of description 2: the miniature bearing 7 that is installed in the reinforcing end of afterburning lever 6 directly is pressed on the afterburning ring 23 of lever along the direction of axis line of big support 4; Plane bearing 1 is positioned on the afterburning ring 23 of lever with cylindrical; 25 one-tenth transition fit of the endoporus of the other end of plane bearing 1 and brake hoop connect brake hoop 25 and friction plate 27 direct contact frictions.
Shown in the Figure of description 3: the F place uses the right hand helix face for work in the driven coupling, and the H place uses left-handed helicoid for work, and the G place employs the right hand helix face, and the J place employs left-handed helicoid.
Shown in the Figure of description 4: initiatively the O place uses the right hand helix face for work in the coupling, and the Q place uses left-handed helicoid for work, and the P place employs the right hand helix face, and the R place employs left-handed helicoid.
Shown in the Figure of description 2: driven coupling 28 is positioned on the lower end cap 1 through plane bearing 2 29, rolling bearing 30 and shaft block ring B 31, and the brake disc on the driven coupling 28 directly contacts with friction plate 27 and produces friction.
Figure of description 3 is with shown in the Figure of description 2: driven coupling 28 adopts bidentate face structure, and wherein internal layer flank of tooth helix angle is greater than outer flank of tooth helix angle.
Figure of description 4 is with shown in the Figure of description 2: initiatively coupling 14 adopts bidentate face structures, and wherein internal layer flank of tooth helix angle is greater than outer flank of tooth helix angle, and with driven coupling 28 internal and external layer flank of tooth helix angles coupling.
The working procedure of this bidentate face braking limit for tonnage coupling: power source is imported from active coupling 14 splined holes; The engagement of the starting helical tooth flank through active coupling 14 and the starting helical tooth flank of driven coupling 28 has produced the end thrust greater than brake spring; Brake off, after initiatively coupling 14 input torques were stablized or continued to strengthen, active coupling 14 started helicoids with driven coupling 28 and exchanges to the working screw face; Produce axial displacement compression brake springs 22 and reach the balance with spring pressure in order to reach coupling 14 initiatively; At this moment many afterburning levers 6 of the afterburning ring 23 reverse promotions of active coupling 14 drive brake hoops 25, plane bearing 1 and lever move along the braking conical surface of spring seat 18, lay down simultaneously to add the braking force that is pressed on the friction plate 27, brake off; The effect of performance coupling is carried out transmission; When working machine transshipped, initiatively the axial force of coupling 14 upper edge axial directions also increased thereupon, and initiatively coupling 14 must produce displacement along axial direction; Further compression brake spring 22 in order to reach the balance with brake spring 22 thrusts, is thrown off up to the helical tooth flank of active coupling 14 and the spirality flank of tooth of driven coupling 28 fully; This moment, coupling was in the state that skids; Machine has been protected in no longer transmission, has realized the limit for tonnage protection; Power source is removed; Torque disappears, and the pressure of the brake spring 22 that receives on axially at active coupling 14 also resets into the state before shutting down thereupon, and the energy that this moment, brake spring 22 was saved discharges immediately; Promoting initiatively, coupling 14 moves to driven coupling 28 directions; Drive is positioned at the spring seat 18 same moved further on the coupling 14 initiatively, and the braking conical surface on the spring seat 18 promotes to be installed in the miniature bearing 7 on the afterburning lever 6, drives afterburning lever 6 and gives the lever brake disc that afterburning ring 23 passes on plane bearing 1, brake hoop 25, friction plate 27, friction disc support 26, friction plate 27 and the driven coupling 28 successively through another miniature bearing 7 pressurizations; The brake disc of brake hoop 25 and driven coupling 28 is combined with friction plate 27 respectively; Produce friction, form the braking moment that has strengthened, realize braking.
Bidentate face braking limit for tonnage coupling is reasonable in design, and compact structure is sensitive reliable, can be widely used in the multiclass mechanical transmission coupling.
Claims (4)
1. a bidentate face braking limit for tonnage coupling is characterized in that: active coupling (14) employing double helix flank of tooth structure, driven coupling (28) employing double helix flank of tooth structure.
2. bidentate face braking limit for tonnage coupling according to claim 1, internal layer flank of tooth helix angle is greater than outer flank of tooth helix angle in the driven coupling (28).
3. bidentate face braking limit for tonnage coupling according to claim 1, initiatively the middle internal layer flank of tooth helix angle of coupling (14) is greater than outer flank of tooth helix angle.
4. bidentate face braking limit for tonnage coupling according to claim 1, driven coupling (28) and active coupling (14) internal and external layer flank of tooth helix angle are complementary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220101001 CN202579768U (en) | 2012-03-19 | 2012-03-19 | Double-tooth-surface braking load limit coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220101001 CN202579768U (en) | 2012-03-19 | 2012-03-19 | Double-tooth-surface braking load limit coupler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202579768U true CN202579768U (en) | 2012-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220101001 Expired - Fee Related CN202579768U (en) | 2012-03-19 | 2012-03-19 | Double-tooth-surface braking load limit coupler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202579768U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105299110A (en) * | 2014-06-25 | 2016-02-03 | 湖北省咸宁三合机电制业有限责任公司 | Power-on de-braking load-limiting coupler |
-
2012
- 2012-03-19 CN CN 201220101001 patent/CN202579768U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105299110A (en) * | 2014-06-25 | 2016-02-03 | 湖北省咸宁三合机电制业有限责任公司 | Power-on de-braking load-limiting coupler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20130319 |